If x + 0 = 0 + x = x, which is rational number,
Question:

If x + 0 = 0 + x = x, which is rational number, then 0 is called

(a) identity for addition of rational numbers

(b) additive inverse of  x

(c) multiplicative inverse of x

(d) reciprocal of x

Solution:

(a) We know that, the sum of any rational number and zero (0) is the rational number itself.

Now, x + 0 = 0+ x= x, which is a rational number, then 0 is called identity for addition of rational numbers.

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